Of 56 counties in the Treasure State, Treasure County ranks 53rd in terms of size (984 square miles). Treasure County is in Southeast Montana. Montana's Treasure County has roughly 1,000 acres of lakefront land and property for sale based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here was around $400,000. Browse all waterfront property for sale in Treasure County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits! The most common type of land for sale by combined acreage in Treasure County is house.